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-rw-r--r--security/commoncap.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/security/commoncap.c b/security/commoncap.c
index feb6044f701d..cbb203c91406 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -548,7 +548,8 @@ skip:
if ((is_setid ||
!cap_issubset(new->cap_permitted, old->cap_permitted)) &&
- bprm->unsafe & ~LSM_UNSAFE_PTRACE_CAP) {
+ ((bprm->unsafe & ~(LSM_UNSAFE_PTRACE | LSM_UNSAFE_PTRACE_CAP)) ||
+ !ptracer_capable(current, new->user_ns))) {
/* downgrade; they get no more than they had, and maybe less */
if (!ns_capable(new->user_ns, CAP_SETUID) ||
(bprm->unsafe & LSM_UNSAFE_NO_NEW_PRIVS)) {

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